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Equity and Long-Term Incentive Compensation Plans - Equity Incentive Program (Details) - shares shares in Thousands | 6 Months Ended |
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Maximum number of shares available for grant (in shares) | [1] | 3,680 |  | 15,030
Total Shares Available for Grant under the Company's equity incentive plans: |  |  |  |
Balance as of June 30, 2018 (in shares) | [1] | 3,680 |  |
Plan shares increased (in shares) |  |  | 12,000 |
Balance as of December 31, 2018 (in shares) | [1] | 15,030 |  |
2004 Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Shares available for issuance (in shares) |  |  |  | 13,400
Restricted stock units |  |  |  |
Total Shares Available for Grant under the Company's equity incentive plans: |  |  |  |
Restricted stock units granted (in shares) | [1],[2] | (675) |  |
Restricted stock units granted, adjustment (in shares) | [1],[3] | 5 |  |
Restricted stock units canceled (in shares) | [1] | 20 |  |
Restricted stock units | 2004 Plan |  |  |  |
Total Shares Available for Grant under the Company's equity incentive plans: |  |  |  |
Restricted stock units granted (in shares) | [4],[5] | (338) |  |
Restricted stock units granted, adjustment (in shares) | [5],[6] | 2 |  |
Restricted stock units canceled (in shares) | [5] | 10 |  |
Restricted stock unit, Performance-based and Service-based |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Maximum number of shares available for grant (in shares) |  | 400 |  | 400
Total Shares Available for Grant under the Company's equity incentive plans: |  |  |  |
Balance as of December 31, 2018 (in shares) |  | 400 |  |
Restricted stock unit, Performance-based and Service-based | 2004 Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Maximum number of shares available for grant (in shares) |  | 200 | 42 | 200
Total Shares Available for Grant under the Company's equity incentive plans: |  |  |  |
Balance as of June 30, 2018 (in shares) |  | 200 | 42 |
Balance as of December 31, 2018 (in shares) |  | 200 |  |
[1] | The number of RSUs reflects the application of the award multiplier (1.8x or 2.0x depending on the grant date of the applicable award)
[2] | Includes RSUs granted to senior management during the six months ended December 31, 2018 with performance-based vesting criteria (in addition to service-based vesting criteria for any of such RSUs that are deemed to have been earned). As of December 31, 2018, it had not yet been determined the extent to which (if at all) the performance-based vesting criteria had been satisfied. Therefore, this line item includes all such performance-based RSUs granted during the six months ended December 31, 2018, reported at the maximum possible number of shares that may ultimately be issuable if all applicable performance-based criteria are achieved at their maximum levels and all applicable service-based criteria are fully satisfied (0.4 million shares for the six months ended December 31, 2018 reflects the application of the multiplier described above).
[3] | Represents the portion of RSUs granted with performance-based vesting criteria and reported at the actual number of shares issued upon achievement of the performance vesting criteria during the six months ended December 31, 2018
[4] | Includes RSUs granted to senior management with performance-based vesting criteria (in addition to service-based vesting criteria for any of such RSUs that are deemed to have been earned). As of December 31, 2018, it had not yet been determined the extent to which (if at all) the performance-based vesting criteria had been satisfied. Therefore, this line item includes all such performance-based RSUs, reported at the maximum possible number of shares (42 thousand shares for the fiscal year ended June 30, 2017, 0.2 million shares for the fiscal year ended June 30, 2018 and 0.2 million shares for the six months ended December 31, 2018) that may ultimately be issuable if all applicable performance-based criteria are achieved at their maximum and all applicable service-based criteria are fully satisfied
[5] | Share numbers reflect actual shares subject to awarded RSUs. Under the terms of the 2004 Plan, the number of shares subject to each award reflected in this number is multiplied by either 1.8x or 2.0x (depending on the grant date of the award) to calculate the impact of the award on the share reserve under the 2004 Plan.
[6] | Represents the portion of RSUs granted with performance-based vesting criteria and reported at the actual number of shares issued upon achievement of the performance vesting criteria during six months ended December 31, 2018.

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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Increase (Decrease) in Number of Shares Available for Grant + References No definition available. + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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